Vat color and process of making same.



STATES PATENT onniton Gnonq KALISCHER, or MAINKUR, NEAR FBANKFORT-GN-THEJEIAIN, sessions.

VAT COLOR AND PROCESS OF G- SAME.

No Drawing. Application filed February 28, 1916, Serial No. 89,839.

Specification of Letters Patent.

Patented New Renewed April 3'3, 1558. Serial To aZZ whomz't may concern:

, Be it known that I,-Gnono KAmsonnn, Ph. 1)., a subject of the King of Prussia, residing at Waldstrasse 23, at Mainkur, near Frankfrt-.on-the-Main, Germany, have invented a certain new Vat Color and Process of Making Same, of which the following is a full description.

I I i /V\ I l Instead of starting from the l-aminoanthraquinone-Z-aldehydo proper, the azomethine compounds derived from the aldehyde, of the general forn'iula (Where R represents any aromatic group),

' ing solution of kilos l-aminoanthraquinone-2-aldehyde and 400 kilos glacial acetic acid. After heating for a short time, the dyestufi separates 1n the shape of thin crystals,-. The new coloring matter, being a dark red powder is very diflicultly soluble in organic solvents of a high boiling point. In concentrated sulfuric acid the new dyestufi' dissolves with an olive color which turns an intense greenish blue on the addition of peraformaldehyde. With hydrosuh which. consists in condensing l-aminoanthra- I have discovered that by condensation of the l-aminoanthraquinoncfi-aldehyde with hydrazin, a new vat color of an intense claret red shade and very good properties of fastness is obtained of probably the followingformula:

and caustic soda lye a blackish violet vat is obtained, dyeing cotton clear claret red shades of exec lcut fustness to Washing, chloriz'zg and light. 7

.Exzunple 2: 6.5 kilos of uxomcthine compound obtained from L. nincanthraquilite none-2-uldehyde and nniiin, of the following "formula- NIL.

I are dissolved in 1:30 kilos glacial acetic acid, and the solution thus obtained. is mixed with a solution contninm'; 0.6 halos l. ydrriniu hyl ia-tuuirct (irate r-ifter half a donsotion i stufi' corresponds in With-the dyestuil' 0 according to: Exauxpl: i zin hydrate incntioncii in the emu of hydraziu with the add in of be used with the some h. .11.

Having now particularly described and ascertained the nature of my said invention, and in What manner the same is to he performed, I declare that what I. claim is:

1, The process of producing a new vat color, probably of the following formula:

stufl thus obtained represents a red quinone-2-aldehyde with hydrazin; the dyepowder, very difiicultly soluble in solvents I being a, dark reii powder very difiicnitiy solof in high boiling point, soluble in concen" lye a blackish, violet vat which dye-e coiton tmteii sulfuric acid with, 5131, olive color, elm-eh red EillSIlABS 011"; very good fastnees Bub whichon the mlclition of peieiornialclehyile etentia'lly as ciee-eiioecl. I

' 2. The process producing a new vat changed into an int e greenish blue,

yielding with. li ydliesn. 'ise caustic soda color, pirolmbly of the following formula: 10

which consists in conclensing the zizonietliinc soluble in solvents of a high boiling point, compounds derive. from the Laininonnthi'w soluble in concentrated sulfuric acid with an quinone-fZ-aldehyde, 0f the general formula: olive color, which, on addition of parafornialdehyde is changed into an intense greenish blue, yielding with hydrosulfite and caustic soda lye a. blackish violet vat, which I I dyes cottgon claret red shades of very good fnstness, substantially as described.

3. The herein clescir-ibed new vat dyestufi', deriving from l-znninoanthraquinonc-2-alde- (Where R represents any aromatic group), liyde 11nd hydrazin, of prcbablyilie follow with an olive color, which on addition of pamformaldehyde is changed into an intense greenish blue color, yielding a blackish violet val; with liydi'osnlfite and caustic soda lye, which dyes; cotton claret red shades of very good faslzness, subsbanti-elly as described.

Witnesses JEAN GRUND,

1 I I In Witness whereof I have hereunto signed uble in organic solvents of a high boiling my name this 26th day of January 1916, in po nt, soluble in concentrated sulfuric acid the presence of two subscribing Witnesses.

Dn. GEOR Ii KALISCHER.

HARRY I 1. CARLSON; 

